| datetime | depth | wind_speed | wind_dir | wave_height | cloud_cover_10th | surf_temp_f | lon_start | lat_start | lon_end | lat_end | notes | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| deploy | ||||||||||||
| C2305-1 | ||||||||||||
| C2305-2 | ||||||||||||
| M12 | ||||||||||||
| L12 | ||||||||||||
| K12 | ||||||||||||
| K09 | ||||||||||||
| recover | ||||||||||||
| C2305-1 | ||||||||||||
| C2305-2 | ||||||||||||
| M12 | ||||||||||||
| L12 | ||||||||||||
| K12 | ||||||||||||
| K09 | ||||||||||||
Cruise Report: 2023-05-02 : 05-03
Pot survey
General notes
Due to high winds (28 kts with gusts to 40 kts) and high seas (6+ feet), this survey was delayed by one day. Weather on Wednesday, 3 May was very amenable to deployment (2-3 ft seas), though weather on Thursday, 4 May should be used as a reference for maximum workable conditions: 3-4 ft seas with 6 ft rollers, winds constant at >15 kts. There is room to work at conditions that are worse if absolutely necessary.
Participants
- Mike O’Brien (UMCES)
- Lauren Rodriguez (UMCES)
- Capt. Brendan Harrington (F/V Integrity)
- Reilly (F/V Integrity, mate)
Pot deployment cruise, 2023-05-03
Overall
- 02:30 Meet at F/V Integrity, prepare for departure.
- 02:45 Depart dock, transit to C2305-1 (control site).
- 05:19 Arrive at C2305-1.
- 05:19 Begin deploying pots.
- 05:23 Finish deploying pots, transit to C2305-2 (control site).
- 05:58 Arrive at C2305-2.
- 05:58 Begin deploying pots.
- 06:01 Finish deploying pots, transit to M12 (experimental turbine site).
- 06:34 Arrive at M12.
- 06:35 Begin deploying pots.
- 06:38 Finish deploying pots, transit to L12 (experimental turbine site).
- 06:46 Arrive at L12.
- 06:47 Begin deploying pots.
- 06:50 Finish deploying pots, transit to K12 (experimental turbine site).
- 07:00 Arrive at K12.
- 07:01 Begin deploying pots.
- 07:04 Finish deploying pots, transit to K09 (experimental turbine site).
- 07:28 Arrive at K09.
- 07:28 Begin deploying pots.
- 07:31 Finish deploying pots, begin fishing.
- 07:31 End fishing, return to West Ocean City, MD.
- 10:00 Arrive in West Ocean City, MD.
Description
Survey deployment
Capt. Brendan Harrington and mates Reilly and Will retrieved the pots from the Maryland Coastal Bays program and stacked the pots on the boat starting at 2 May. Because of this, UMCES crew arrived late on 2 May and did not interact with the crew.
Survey commenced on 3 May. Wind speed was 10-15 knots, coming from the NW. Waves were 2 ft. Cloud cover was 0-10% of the sky. Control sites ranged in depth from 121-129 ft, with turbine sites ranging from 98-110 ft.
Onset HOBO temperature loggers were attached to two rigs due to be deployed at turbine sites to log bottom temperature at 10 intervals during deployment. Due to a late change in the order of site deployment, HOBO loggers were instead deployed at one control (C2305-1) and one turbine site (M12).
Pot recovery cruise, 2023-05-04
Overall
- 02:30 Meet at F/V Integrity, prepare for departure.
- 02:50 Depart dock, transit to C2305-1.
- 05:21 Arrive at C2305-1.
- 05:24 Southern trawl anchor (“block”) recovered.
- 05:34 Northern block recovered; pot recovery complete. Transit to C2305-2.
- 06:16 Arrive C2305-2. Begin pot recovery approach.
- 06:17 Southern block recovered.
- 06:28 Northern block recovered; pot recovery complete. Transit to M12.
- 07:31 Arrive M12. Begin pot recovery approach.
- 07:33 Southern block recovered.
- 07:41 Northern block recovered; pot recovery complete. Transit to L12.
- 08:06 Arrive L12. Begin pot recovery approach.
- 08:08 Southern block recovered.
- 08:18 Northern block recovered; pot recovery complete. Transit to K12.
- 08:36 Arrive K12. Begin pot recovery approach.
- 08:39 Southern block recovered.
- 08:53 Northern block recovered; pot recovery complete. Transit to K09.
- 09:39 Arrive K09. Begin pot recovery approach.
- 09:41 Southern block recovered.
- 09:49 Northern block recovered; pot recovery complete.
- 1000 End survey, return to West Ocean City, MD.
- 1230 Arrive in West Ocean City, MD.
Description
Wind speed was >15 knots, coming from the WNW (as reported by Capt. Harrington). Waves were 4 feet with 6 foot rollers. Cloud cover was 10% of the sky. Though the survey was conducted safely and there is room to “go up” if necessary, these should be considered the top end of weather conditions for operations.
Pots were recovered in the same manner as in previous cruises.
HOBO temperature loggers were successfully recovered from the rigs at C2305-1 and M12.
Dominant species were black sea bass (66) and Atlantic rock crab (13), with sand dollars and one jonah crab also present. 20 of the 89 recovered pots were empty.
There was no significant difference in black sea bass catch between near and far sections of the lines (Poisson GLM, \(p >\) 0.05), but turbine sites had significantly more fish than control sites (Poisson GLM, \(p <\) 0.05).
Total length (mm) and weight (g) of all black sea bass were recorded, culling the first five from each “near” and “far” section and releasing the others. Total lengths of other fish species were also recorded. Black sea bass ranged in total length from 146 - 390 mm, with a mean of 248 mm (minimum legal size 320 mm). Weights ranged from 140 - 800 g, mean of 260 g.
There were no significant differences in length or weight between near and far or control and turbine sites (ANOVA, \(p >\) 0.05).
Catch and size data summaries are shown in the sample summary section below.
Station information
Bottom temperature
Cruise map
Sample summary
Catch
| Black sea bass catch | |||||||
| N | min | average | med | max | sd | retained | |
|---|---|---|---|---|---|---|---|
| April - 2023 - Control | |||||||
| far | |||||||
| near | |||||||
| April - 2023 - Project | |||||||
| far | |||||||
| near | |||||||
| May - 2023 - Control | |||||||
| far | |||||||
| near | |||||||
| May - 2023 - Project | |||||||
| far | |||||||
| near | |||||||
| June - 2022 - Control | |||||||
| far | |||||||
| near | |||||||
| June - 2022 - Project | |||||||
| far | |||||||
| near | |||||||
| July - 2022 - Control | |||||||
| far | |||||||
| near | |||||||
| July - 2022 - Project | |||||||
| far | |||||||
| near | |||||||
| August - 2022 - Control | |||||||
| far | |||||||
| near | |||||||
| August - 2022 - Project | |||||||
| far | |||||||
| near | |||||||
April 2023 catch
The blank bars on the right show the count of pots with no catch.